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Cazzato G, Ingravallo G, Ribatti D. Angiogenesis Still Plays a Crucial Role in Human Melanoma Progression. Cancers (Basel) 2024; 16:1794. [PMID: 38791873 PMCID: PMC11120419 DOI: 10.3390/cancers16101794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 05/03/2024] [Accepted: 05/06/2024] [Indexed: 05/26/2024] Open
Abstract
Angiogenesis plays a pivotal role in tumor progression, particularly in melanoma, the deadliest form of skin cancer. This review synthesizes current knowledge on the intricate interplay between angiogenesis and tumor microenvironment (TME) in melanoma progression. Pro-angiogenic factors, including VEGF, PlGF, FGF-2, IL-8, Ang, TGF-β, PDGF, integrins, MMPs, and PAF, modulate angiogenesis and contribute to melanoma metastasis. Additionally, cells within the TME, such as cancer-associated fibroblasts, mast cells, and melanoma-associated macrophages, influence tumor angiogenesis and progression. Anti-angiogenic therapies, while showing promise, face challenges such as drug resistance and tumor-induced activation of alternative angiogenic pathways. Rational combinations of anti-angiogenic agents and immunotherapies are being explored to overcome resistance. Biomarker identification for treatment response remains crucial for personalized therapies. This review highlights the complexity of angiogenesis in melanoma and underscores the need for innovative therapeutic approaches tailored to the dynamic TME.
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Affiliation(s)
- Gerardo Cazzato
- Section of Molecular Pathology, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari “Aldo Moro”, 70124 Bari, Italy;
| | - Giuseppe Ingravallo
- Section of Molecular Pathology, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari “Aldo Moro”, 70124 Bari, Italy;
| | - Domenico Ribatti
- Department of Translational Biomedicine and Neuroscience, University of Bari Medical School, 70124 Bari, Italy;
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2
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WNT5A-ROR2 axis mediates VEGF dependence of BRAF mutant melanoma. Cell Oncol 2022; 46:391-407. [PMID: 36539575 PMCID: PMC10060292 DOI: 10.1007/s13402-022-00757-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/05/2022] [Indexed: 12/24/2022] Open
Abstract
Abstract
Purpose
Despite recent advances, approximately 50% of patient with metastatic melanoma eventually succumb to the disease. Patients with melanomas harboring a BRAF mutation (BRAFMut) have a worse prognosis than those with wildtype (BRAFWT) tumors. Unexpectedly, interim AVAST-M Phase III trial data reported benefit from adjuvant anti-VEGF bevacizumab only in the BRAFMut group. We sought to find mechanisms underpinning this sensitivity.
Methods
We investigated this finding in vitro and in vivo using melanoma cell lines and clones generated by BRAFV600E knock-in on a BRAFWT background.
Results
Compared with BRAFWT cells, isogenic BRAFV600E clones secreted more VEGF and exhibited accelerated growth rates as spheroids and xenografts, which were more vascular and proliferative. Recapitulating AVAST-M findings, bevacizumab affected only BRAFV600E xenografts, inducing significant tumor growth delay, reduced vascularity and increased necrosis. We identified 814 differentially expressed genes in isogenic BRAFV600E/BRAFWT clones. Of 61 genes concordantly deregulated in clinical melanomas ROR2 was one of the most upregulated by BRAFV600E. ROR2 was shown to be RAF-MEK regulated in BRAFV600E cells and its depletion suppressed VEGF secretion down to BRAFWT levels. The ROR2 ligand WNT5A was also overexpressed in BRAFMut melanomas, and in ROR2-overexpressing BRAFV600E cells MEK inhibition downregulated WNT5A and VEGF secretion.
Conclusions
These data implicate WNT5A-ROR2 in VEGF secretion, vascularity, adverse outcomes and bevacizumab sensitivity of BRAFMut melanomas, suggesting that this axis has potential therapeutic relevance.
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3
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Gonçalves JP, da Cruz AF, Nunes ÁM, Meneghetti MR, de Barros HR, Borges BS, de Medeiros LCAS, Soares MJ, Dos Santos MP, Grassi MT, Rossi GR, Bellan DL, Biscaia SMP, Cristal AM, Buzzo JLA, Ribeiro YC, Acco A, Cardoso MB, Simas FF, Trindade ES, Riegel-Vidotti IC, de Oliveira CC. Biocompatible gum arabic-gold nanorod composite as an effective therapy for mistreated melanomas. Int J Biol Macromol 2021; 185:551-561. [PMID: 34216657 DOI: 10.1016/j.ijbiomac.2021.06.172] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 05/23/2021] [Accepted: 06/26/2021] [Indexed: 01/13/2023]
Abstract
Advanced melanoma patients that are not included in common genetic classificatory groups lack effective and safe therapeutic options. Chemotherapy and immunotherapy show unsatisfactory results and devastating adverse effects for these called triple wild-type patients. New approaches exploring the intrinsic antitumor properties of gold nanoparticles might reverse this scenario as a safer and more effective alternative. Therefore, we investigated the efficacy and safety of a composite made of gum arabic-functionalized gold nanorods (GA-AuNRs) against triple wild-type melanoma. The natural polymer gum arabic successfully stabilized the nanorods in the biological environment and was essential to improve their biocompatibility. In vivo results obtained from treating triple wild-type melanoma-bearing mice showed that GA-AuNRs remarkably reduced primary tumor growth by 45%. Furthermore, GA-AuNRs induced tumor histological features associated with better prognosis while also reducing superficial lung metastasis depth and the incidence of intrapulmonary metastasis. GA-AuNRs' efficacy comes from their capacity to reduce melanoma cells ability to invade the extracellular matrix and grow into colonies, in addition to a likely immunomodulatory effect induced by gum arabic. Additionally, a broad safety investigation found no evidence of adverse effects after GA-AuNRs treatment. Therefore, this study unprecedentedly reports GA-AuNRs as a potential nanomedicine for advanced triple wild-type melanomas.
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Affiliation(s)
- Jenifer P Gonçalves
- Laboratory of Inflammatory and Neoplastic Cells/Laboratory of Sulfated Polysaccharides Investigation, Cell Biology Department, Section of Biological Sciences, Universidade Federal do Paraná (UFPR), Av Cel Francisco H dos Santos, s/n, CEP 81530-980 Curitiba, PR, Brazil
| | - Anderson F da Cruz
- Laboratory of Inflammatory and Neoplastic Cells/Laboratory of Sulfated Polysaccharides Investigation, Cell Biology Department, Section of Biological Sciences, Universidade Federal do Paraná (UFPR), Av Cel Francisco H dos Santos, s/n, CEP 81530-980 Curitiba, PR, Brazil
| | - Ábner M Nunes
- Catalysis and Chemical Reactivity Group, Institute of Chemistry and Biotechnology, Universidade Federal de Alagoas, Av. Lourival de Melo Mota, s/n, CEP 57072-900 Maceió, AL, Brazil
| | - Mario R Meneghetti
- Catalysis and Chemical Reactivity Group, Institute of Chemistry and Biotechnology, Universidade Federal de Alagoas, Av. Lourival de Melo Mota, s/n, CEP 57072-900 Maceió, AL, Brazil
| | - Heloise R de Barros
- Macromolecules and Interfaces Research Group, Department of Chemistry, UFPR, Av Cel Francisco H dos Santos, s/n, CEP 81530-980 Curitiba, PR, Brazil; Laboratory of Electroactive Materials, Chemistry Institute, Universidade de São Paulo, Av Professor Lineu Prestes, 748, CEP 05513-970 São Paulo, SP, Brazil
| | - Beatriz S Borges
- Laboratory of Cell Biology, Instituto Carlos Chagas (ICC/Fiocruz), Rua Prof. Algacyr Munhoz Mader, 3775, CEP 81350-010 Curitiba, PR, Brazil
| | - Lia C A S de Medeiros
- Laboratory of Cell Biology, Instituto Carlos Chagas (ICC/Fiocruz), Rua Prof. Algacyr Munhoz Mader, 3775, CEP 81350-010 Curitiba, PR, Brazil
| | - Maurilio J Soares
- Laboratory of Cell Biology, Instituto Carlos Chagas (ICC/Fiocruz), Rua Prof. Algacyr Munhoz Mader, 3775, CEP 81350-010 Curitiba, PR, Brazil
| | - Mayara P Dos Santos
- Environmental Chemistry Group, Department of Chemistry, UFPR, Av Cel Francisco H dos Santos, s/n, CEP 81530-980 Curitiba, PR, Brazil
| | - Marco T Grassi
- Environmental Chemistry Group, Department of Chemistry, UFPR, Av Cel Francisco H dos Santos, s/n, CEP 81530-980 Curitiba, PR, Brazil
| | - Gustavo R Rossi
- Laboratory of Inflammatory and Neoplastic Cells/Laboratory of Sulfated Polysaccharides Investigation, Cell Biology Department, Section of Biological Sciences, Universidade Federal do Paraná (UFPR), Av Cel Francisco H dos Santos, s/n, CEP 81530-980 Curitiba, PR, Brazil
| | - Daniel L Bellan
- Laboratory of Inflammatory and Neoplastic Cells/Laboratory of Sulfated Polysaccharides Investigation, Cell Biology Department, Section of Biological Sciences, Universidade Federal do Paraná (UFPR), Av Cel Francisco H dos Santos, s/n, CEP 81530-980 Curitiba, PR, Brazil
| | - Stellee M P Biscaia
- Laboratory of Inflammatory and Neoplastic Cells/Laboratory of Sulfated Polysaccharides Investigation, Cell Biology Department, Section of Biological Sciences, Universidade Federal do Paraná (UFPR), Av Cel Francisco H dos Santos, s/n, CEP 81530-980 Curitiba, PR, Brazil
| | - Aline M Cristal
- Laboratory of Inflammatory and Neoplastic Cells/Laboratory of Sulfated Polysaccharides Investigation, Cell Biology Department, Section of Biological Sciences, Universidade Federal do Paraná (UFPR), Av Cel Francisco H dos Santos, s/n, CEP 81530-980 Curitiba, PR, Brazil
| | - João L A Buzzo
- Laboratory of Inflammatory and Neoplastic Cells/Laboratory of Sulfated Polysaccharides Investigation, Cell Biology Department, Section of Biological Sciences, Universidade Federal do Paraná (UFPR), Av Cel Francisco H dos Santos, s/n, CEP 81530-980 Curitiba, PR, Brazil
| | - Yasmin C Ribeiro
- Laboratory of Inflammatory and Neoplastic Cells/Laboratory of Sulfated Polysaccharides Investigation, Cell Biology Department, Section of Biological Sciences, Universidade Federal do Paraná (UFPR), Av Cel Francisco H dos Santos, s/n, CEP 81530-980 Curitiba, PR, Brazil
| | - Alexandra Acco
- Department of Pharmacology, UFPR, Av Cel Francisco H dos Santos, s/n, CEP 81530-980 Curitiba, PR, Brazil
| | - Mateus B Cardoso
- Laboratório Nacional de Luz Síncrotron, Centro Nacional de Pesquisa em Energia e Materiais, Rua Giuseppe Máximo Scolfaro, 10000, CEP 13083-970, Campinas, SP, Brazil
| | - Fernanda F Simas
- Laboratory of Inflammatory and Neoplastic Cells/Laboratory of Sulfated Polysaccharides Investigation, Cell Biology Department, Section of Biological Sciences, Universidade Federal do Paraná (UFPR), Av Cel Francisco H dos Santos, s/n, CEP 81530-980 Curitiba, PR, Brazil
| | - Edvaldo S Trindade
- Laboratory of Inflammatory and Neoplastic Cells/Laboratory of Sulfated Polysaccharides Investigation, Cell Biology Department, Section of Biological Sciences, Universidade Federal do Paraná (UFPR), Av Cel Francisco H dos Santos, s/n, CEP 81530-980 Curitiba, PR, Brazil
| | - Izabel C Riegel-Vidotti
- Macromolecules and Interfaces Research Group, Department of Chemistry, UFPR, Av Cel Francisco H dos Santos, s/n, CEP 81530-980 Curitiba, PR, Brazil
| | - Carolina C de Oliveira
- Laboratory of Inflammatory and Neoplastic Cells/Laboratory of Sulfated Polysaccharides Investigation, Cell Biology Department, Section of Biological Sciences, Universidade Federal do Paraná (UFPR), Av Cel Francisco H dos Santos, s/n, CEP 81530-980 Curitiba, PR, Brazil.
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4
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Elagin V, Gubarkova E, Garanina O, Davydova D, Orlinskaya N, Matveev L, Klemenova I, Shlivko I, Shirmanova M, Zagaynova E. In vivo multimodal optical imaging of dermoscopic equivocal melanocytic skin lesions. Sci Rep 2021; 11:1405. [PMID: 33446823 PMCID: PMC7809210 DOI: 10.1038/s41598-020-80744-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 12/17/2020] [Indexed: 11/09/2022] Open
Abstract
There is a wide range of equivocal melanocytic lesions that can be clinically and dermoscopically indistinguishable from early melanoma. In the present work, we assessed the possibilities of combined using of multiphoton microscopy (MPM) and optical coherence angiography (OCA) for differential diagnosis of the equivocal melanocytic lesions. Clinical and dermoscopic examinations of 60 melanocytic lesions revealed 10 benign lesions and 32 melanomas, while 18 lesions remained difficult to diagnose. Histopathological analysis of these lesions revealed 4 intradermal, 3 compound and 3 junctional nevi in the "benign" group, 7 superficial spreading, 14 lentigo maligna and 11 nodular melanomas in the "melanoma" group and 2 lentigo simplex, 4 dysplastic nevi, 6 melanomas in situ, 4 invasive lentigo melanomas and 2 invasive superficial spreading melanomas in the "equivocal" group. On the basis of MPM, a multiphoton microscopy score (MPMS) has been developed for quantitative assessment of melanoma features at the cellular level, that showed lower score for benign lesions compare with malignant ones. OCA revealed that the invasive melanoma has a higher vessel density and thicker blood vessels than melanoma in situ and benign lesions. Discriminant functions analysis of MPM and OCA data allowed to differentiate correctly between all equivocal melanocytic lesions. Therefore, we demonstrate, for the first time, that a combined use of MPM and OCA has the potential to improve early diagnosis of melanoma.
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Affiliation(s)
- V Elagin
- Privolzhsky Research Medical University, Minin and Pozharsky Square 10/1, Nizhny Novgorod, Russia, 603950.
| | - E Gubarkova
- Privolzhsky Research Medical University, Minin and Pozharsky Square 10/1, Nizhny Novgorod, Russia, 603950
| | - O Garanina
- Privolzhsky Research Medical University, Minin and Pozharsky Square 10/1, Nizhny Novgorod, Russia, 603950
| | - D Davydova
- Nizhny Novgorod Regional Clinical Oncology Center, Delovaya Street, 11/1, Nizhny Novgorod, Russia, 603126
| | - N Orlinskaya
- Privolzhsky Research Medical University, Minin and Pozharsky Square 10/1, Nizhny Novgorod, Russia, 603950
| | - L Matveev
- Institute of Applied Physics of the Russian Academy of Sciences, Ulyanov Street 46, Nizhny Novgorod, Russia, 603950
| | - I Klemenova
- Privolzhsky Research Medical University, Minin and Pozharsky Square 10/1, Nizhny Novgorod, Russia, 603950
| | - I Shlivko
- Privolzhsky Research Medical University, Minin and Pozharsky Square 10/1, Nizhny Novgorod, Russia, 603950
| | - M Shirmanova
- Privolzhsky Research Medical University, Minin and Pozharsky Square 10/1, Nizhny Novgorod, Russia, 603950
| | - E Zagaynova
- Privolzhsky Research Medical University, Minin and Pozharsky Square 10/1, Nizhny Novgorod, Russia, 603950
- Lobachevsky State University of Nizhni Novgorod, Prospekt Gagarina (Gagarin Avenue) 23, Nizhny Novgorod, Russia, 603950
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5
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Garg SK, Welsh EA, Fang B, Hernandez YI, Rose T, Gray J, Koomen JM, Berglund A, Mulé JJ, Markowitz J. Multi-Omics and Informatics Analysis of FFPE Tissues Derived from Melanoma Patients with Long/Short Responses to Anti-PD1 Therapy Reveals Pathways of Response. Cancers (Basel) 2020; 12:cancers12123515. [PMID: 33255891 PMCID: PMC7768436 DOI: 10.3390/cancers12123515] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 11/21/2020] [Indexed: 01/14/2023] Open
Abstract
Simple Summary Immune based therapies have benefited many melanoma patients, but many patients still do not respond. This study analyzes biospecimens obtained from patients undergoing a type of immune based therapy called anti-PD-1 to understand mechanisms of response and resistance to this treatment. The operational definition of good response utilized in this investigation permitted us to examine the biochemical pathways that are facilitating anti-PD-1 responses independent of prior therapies received by patients. Currently, there are no clinically available tests to reliably test for the outcome of patients treated with anti-PD-1 therapy. The purpose of this study was to facilitate the development of prospective biomarker-directed trials to guide therapy, as even though the side effect profile is favorable for anti-PD-1 therapy, some patients do not respond to therapy with significant toxicity. Each patient may require testing for the pathways upregulated in the tumor to predict optimal benefit to anti-PD-1 treatment. Abstract Anti-PD-1 based immune therapies are thought to be dependent on antigen processing and presentation mechanisms. To characterize the immune-dependent mechanisms that predispose stage III/IV melanoma patients to respond to anti-PD-1 therapies, we performed a multi-omics study consisting of expression proteomics and targeted immune-oncology-based mRNA sequencing. Formalin-fixed paraffin-embedded tissue samples were obtained from stage III/IV patients with melanoma prior to anti-PD-1 therapy. The patients were first stratified into poor and good responders based on whether their tumors had or had not progressed while on anti-PD-1 therapy for 1 year. We identified 263 protein/gene candidates that displayed differential expression, of which 223 were identified via proteomics and 40 via targeted-mRNA analyses. The downstream analyses of expression profiles using MetaCore software demonstrated an enrichment of immune system pathways involved in antigen processing/presentation and cytokine production/signaling. Pathway analyses showed interferon (IFN)-γ-mediated signaling via NF-κB and JAK/STAT pathways to affect immune processes in a cell-specific manner and to interact with the inducible nitric oxide synthase. We review these findings within the context of available literature on the efficacy of anti-PD-1 therapy. The comparison of good and poor responders, using efficacy of PD-1-based therapy at 1 year, elucidated the role of antigen presentation in mediating response or resistance to anti-PD-1 blockade.
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Affiliation(s)
- Saurabh K. Garg
- Department of Cutaneous Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; (S.K.G.); (Y.I.H.)
| | - Eric A. Welsh
- Biostatistics and Bioinformatics Shared Resource, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA;
| | - Bin Fang
- Proteomics & Metabolomics Core, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; (B.F.); (J.M.K.)
| | - Yuliana I. Hernandez
- Department of Cutaneous Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; (S.K.G.); (Y.I.H.)
| | - Trevor Rose
- Department of Radiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA;
- Department of Oncologic Sciences, University of South Florida Health Morsani College of Medicine, Tampa, FL 33620, USA; (J.G.); (A.B.); (J.J.M.)
| | - Jhanelle Gray
- Department of Oncologic Sciences, University of South Florida Health Morsani College of Medicine, Tampa, FL 33620, USA; (J.G.); (A.B.); (J.J.M.)
- Department of Thoracic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - John M. Koomen
- Proteomics & Metabolomics Core, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; (B.F.); (J.M.K.)
- Department of Oncologic Sciences, University of South Florida Health Morsani College of Medicine, Tampa, FL 33620, USA; (J.G.); (A.B.); (J.J.M.)
| | - Anders Berglund
- Department of Oncologic Sciences, University of South Florida Health Morsani College of Medicine, Tampa, FL 33620, USA; (J.G.); (A.B.); (J.J.M.)
- Department of Biostatistics and Bioinformatics, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - James J. Mulé
- Department of Oncologic Sciences, University of South Florida Health Morsani College of Medicine, Tampa, FL 33620, USA; (J.G.); (A.B.); (J.J.M.)
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Joseph Markowitz
- Department of Cutaneous Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; (S.K.G.); (Y.I.H.)
- Department of Oncologic Sciences, University of South Florida Health Morsani College of Medicine, Tampa, FL 33620, USA; (J.G.); (A.B.); (J.J.M.)
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
- Correspondence: ; Tel.: +1-813-745-8581
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6
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Lv R, Yu J, Sun Q. Anti-angiogenic role of microRNA-23b in melanoma by disturbing NF-κB signaling pathway via targeted inhibition of NAMPT. Future Oncol 2020; 16:541-458. [PMID: 32107941 DOI: 10.2217/fon-2019-0699] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Aim: Melanoma is the major cause of death in patients inflicting skin cancer. We identify miR-23b plays an anti-angiogenic role in melanoma. Materials & methods: We collected tumor tissues from melanoma patients. Experiments in vivo and in vitro were designed to evaluate the role of miR-23b in melanoma. Results & conclusion: miR-23b was found to be downregulated in melanoma tissues, and associated with poor patient survival. Elevating miR-23b inhibited cell viability and colony formation, reduced pro-angiogenetic ability, and accelerated apoptosis in SK-MEL-28 cells. miR-23b targeted NAMPT. Disturbing NF-κB signaling pathway with ammonium pyrrolidinedithiocarbamate (an inhibitor of NF-kB signaling pathway) impeded acquired pro-angiogenetic ability of nicotinamide phosphoribosyl transferase-overexpressed SK-MEL-28 cells. MiR-23b is a prognostic factor in melanoma. This study provides an enhanced understanding of microRNA-based targets for melanoma treatment.
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Affiliation(s)
- Renrong Lv
- Department of Burn & Plastic Surgery, Provincial Hospital Affiliated to Shandong University, Ji'nan 250021, Shandong Province, PR China
| | - Jing Yu
- Department of Burn & Plastic Surgery, Zhangqiu People's Hospital, Ji'nan 250200, Shandong Province, PR China
| | - Qian Sun
- Department of Obstetrics, Ji'nan Maternity & Child Health Care Hospital, Ji'nan 250001, Shandong Province, PR China
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7
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Nyakas M, Aamdal E, Jacobsen KD, Guren TK, Aamdal S, Hagene KT, Brunsvig P, Yndestad A, Halvorsen B, Tasken KA, Aukrust P, Maelandsmo GM, Ueland T. Prognostic biomarkers for immunotherapy with ipilimumab in metastatic melanoma. Clin Exp Immunol 2019; 197:74-82. [PMID: 30821848 PMCID: PMC6591141 DOI: 10.1111/cei.13283] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/20/2019] [Indexed: 12/23/2022] Open
Abstract
New therapies, including the anti‐cytotoxic T lymphocyte antigen (CTLA)‐4 antibody, ipilimumab, is approved for metastatic melanoma. Prognostic biomarkers need to be identified, because the treatment has serious side effects. Serum samples were obtained before and during treatment from 56 patients with metastatic or unresectable malignant melanoma, receiving treatment with ipilimumab in a national Phase IV study (NCT0268196). Expression of a panel of 17 inflammatory‐related markers reflecting different pathways including extracellular matrix remodeling and fibrosis, vascular inflammation and monocyte/macrophage activation were measured at baseline and the second and/or third course of treatment with ipilimumab. Six candidate proteins [endostatin, osteoprotegerin (OPG), C‐reactive protein (CRP), pulmonary and activation‐regulated chemokine (PARC), growth differentiation factor 15 (GDF15) and galectin‐3 binding‐protein (Gal3BP)] were persistently higher in non‐survivors. In particular, high Gal3BP and endostatin levels were also independently associated with poor 2‐year survival after adjusting for lactate dehydrogenase, M‐stage and number of organs affected. A 1 standard deviation increase in endostatin gave 1·74 times [95% confidence interval (CI) = 1·10–2·78, P = 0·019] and for Gal3BP 1·52 times (95% CI = 1·01–2·29, P = 0·047) higher risk of death in the adjusted model. Endostatin and Gal3BP may represent prognostic biomarkers for patients on ipilimumab treatment in metastatic melanoma and should be further evaluated. Owing to the non‐placebo design, we could only relate our findings to prognosis during ipilimumab treatment.
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Affiliation(s)
- M Nyakas
- Department of Oncology, Oslo University Hospital, The Norwegian Radium Hospital, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - E Aamdal
- Department of Oncology, Oslo University Hospital, The Norwegian Radium Hospital, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - K D Jacobsen
- Department of Oncology, Oslo University Hospital, The Norwegian Radium Hospital, Oslo, Norway
| | - T K Guren
- Department of Oncology, Oslo University Hospital, The Norwegian Radium Hospital, Oslo, Norway
| | - S Aamdal
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - K T Hagene
- Department of Oncology, Oslo University Hospital, The Norwegian Radium Hospital, Oslo, Norway
| | - P Brunsvig
- Department of Oncology, Oslo University Hospital, The Norwegian Radium Hospital, Oslo, Norway
| | - A Yndestad
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,K.G. Jebsen Inflammatory Research Center, University of Oslo, Oslo, Norway
| | - B Halvorsen
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,K.G. Jebsen Inflammatory Research Center, University of Oslo, Oslo, Norway
| | - K A Tasken
- Department of Tumor Biology, Institute for Cancer Research, Oslo University Hospital, The Norwegian Radium Hospital, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - P Aukrust
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,Section of Clinical Immunology and Infectious Diseases, Oslo University Hospital, Rikshospitalet, Oslo, Norway.,K.G. Jebsen Inflammatory Research Center, University of Oslo, Oslo, Norway.,K. G. Jebsen Thrombosis Research and Expertise Center, University of Tromsø, Tromsø, Norway
| | - G M Maelandsmo
- Department of Tumor Biology, Institute for Cancer Research, Oslo University Hospital, The Norwegian Radium Hospital, Oslo, Norway.,Department of Medical Biology, Faculty of Health Sciences, University of Tromsø, Tromsø, Norway
| | - T Ueland
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,K. G. Jebsen Thrombosis Research and Expertise Center, University of Tromsø, Tromsø, Norway
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8
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Mangir N, Raza A, Haycock JW, Chapple C, Macneil S. An Improved In Vivo Methodology to Visualise Tumour Induced Changes in Vasculature Using the Chick Chorionic Allantoic Membrane Assay. ACTA ACUST UNITED AC 2018; 32:461-472. [PMID: 29695547 DOI: 10.21873/invivo.11262] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 02/07/2018] [Accepted: 02/08/2018] [Indexed: 01/11/2023]
Abstract
BACKGROUND/AIM Decreasing the vascularity of a tumour has proven to be an effective strategy to suppress tumour growth and metastasis. Anti-angiogenic therapies have revolutionized the treatment of advanced-stage cancers, however there is still demand for further improvement. This necessitates new experimental models that will allow researchers to reliably study aspects of angiogenesis. The aim of this study was to demonstrate an in vivo technique in which the highly vascular and accessible chorioallantoic membrane (CAM) of the chick embryo is used to study tumour-induced changes in the macro and microvessels. MATERIALS AND METHODS Two cancer cell lines (human melanoma (C8161) and human prostate cancer (PC3)) were selected as model cells. Human dermal fibroblasts were used as a control. One million cells were labelled with green fluorescent protein and implanted on the CAM of the chick embryo at embryonic development day (EDD) 7 and angiogenesis was evaluated at EDDs 10, 12 and 14. A fluorescently-tagged lectin (lens culinaris agglutinin (LCA)) was injected intravenously into the chick embryo to label endothelial cells. The LCA is known to label the luminal surface of endothelial cells, or dextrans, in the CAM vasculature. Macrovessels were imaged by a hand-held digital microscope and images were processed for quantification. Microvessels were evaluated by confocal microscopy. Tumour invasion was assessed by histological and optical sectioning. RESULTS Tumour cells (C8161 and PC3) produced quantifiable increases in the total area covered by blood vessels, compared to fibroblasts when assessed by digital microscopy. Tumour invasion could be demonstrated by both histological and optical sectioning. The most significant changes in tumour vasculature observed were in the microvascular structures adjacent to the tumour cells, which showed an increase in the endothelial cell coverage. Additionally, tumour intravasation and tumour thrombus formation could be detected in the areas adjacent to tumour cells. The fragility of tumour blood vessels could be demonstrated when tumour cells seeded on a synthetic scaffold were grown on CAM. CONCLUSION We report on a modification to a well-studied CAM in vivo assay, which can be effectively used to study tumour induced changes in macro and microvasculature.
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Affiliation(s)
- Naside Mangir
- Department of Materials Science Engineering, Kroto Research Institute, University of Sheffield, Sheffield, U.K.,Royal Hallamshire Hospital, Urology Clinic, Sheffield, U.K
| | - Ahtasham Raza
- Department of Materials Science Engineering, Kroto Research Institute, University of Sheffield, Sheffield, U.K
| | - John W Haycock
- Department of Materials Science Engineering, Kroto Research Institute, University of Sheffield, Sheffield, U.K
| | | | - Sheila Macneil
- Department of Materials Science Engineering, Kroto Research Institute, University of Sheffield, Sheffield, U.K.
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9
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Mishra H, Mishra PK, Ekielski A, Iqbal Z, Jaggi M, Talegaonkar S. Functionalized nanoliposomes loaded with anti survivin and anti angiogenic agents to enhance the activity of chemotherapy against melanoma by 4-pronged action. Med Hypotheses 2018; 116:141-146. [DOI: 10.1016/j.mehy.2018.05.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 04/16/2018] [Accepted: 05/07/2018] [Indexed: 11/15/2022]
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10
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Nacchiero E, Vestita M, Robusto F, Maruccia M, Annoscia P, Giudice G. Surgical management of tumor-positive interval node in melanoma patients: An observational study. Medicine (Baltimore) 2018; 97:e0584. [PMID: 29718857 PMCID: PMC6392795 DOI: 10.1097/md.0000000000010584] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The presence of interval nodes (IN) in melanoma is testified in several studies and sometimes these lymph nodes can contain metastatic disease. Currently there are no guidelines about the management of patients with tumor-positive INs.We enrolled all patients affected by melanoma who underwent sentinel lymph node biopsy (SLNB) in a single institution. All patients with tumor-positive IN underwent the lymphadenectomy of the subsequent draining lymphatic field. Prognosis of IN+-patients was compared with subjects with positive SLNB in usual field through Kaplan-Meier and multivariate Cox regression analysis.Overall 596 subjects underwent lymphoscintigraphy and one or more INs were identified in 94 (15.8%) patients. The mean number of sentinel lymph nodes (SNs) identified per patient was significantly higher in patients with INs. Macrometastasis were more common in patients with INs. Matched pair analysis testified a statistically significant better prognosis in patients with positive-INs when compared with patients with positive SNs in usual side with the same demographic and clinical characteristics. These findings were confirmed both in analysis of 10-year recurrence-free period, then in 10-years overall survival analysis.Lymphadenectomy of the lymphatic draining field beyond positive-IN testify has proved to be a safe procedure that may improve prognosis in melanoma patients with tumor-positive INs. The better prognosis of patients with tumor-positive INs undergoing lymphadenectomy may be justified by the earlier treatment of lymphatic metastases. Further multicentric comparative studies are needed to evaluate possible impact of this procedure on prognosis of melanoma patients.
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11
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Strzelak K, Rybkowska N, Wiśniewska A, Koncki R. Photometric flow analysis system for biomedical investigations of iron/transferrin speciation in human serum. Anal Chim Acta 2017; 995:43-51. [PMID: 29126480 DOI: 10.1016/j.aca.2017.10.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 10/11/2017] [Accepted: 10/17/2017] [Indexed: 01/28/2023]
Abstract
The Multicommutated Flow Analysis (MCFA) system for the estimation of clinical iron parameters: Serum Iron (SI), Unsaturated Iron Binding Capacity (UIBC) and Total Iron Binding Capacity (TIBC) has been proposed. The developed MCFA system based on simple photometric detection of iron with chromogenic agent (ferrozine) enables a speciation of transferrin (determination of free and Fe-bound protein) in human serum. The construction of manifold was adapted to the requirements of measurements under changing conditions. In the course of studies, a different effect of proteins on SI and UIBC determination has been proven. That was in turn the reason to perform two kinds of calibration methods. For measurements in acidic medium for SI/holotransferrin determination, the calibration curve method was applied, characterized by limit of determination and limit of quantitation on the level of 3.4 μmol L-1 and 9.1 μmol L-1, respectively. The determination method for UIBC parameter (related to apotransferrin level) in physiological medium of pH 7.4 forced the use of standard addition method due to the strong influence of proteins on obtaining analytical signals. These two different methodologies, performed in the presented system, enabled the estimation of all three clinical iron/transferrin parameters in human serum samples. TIBC corresponding to total transferrin level was calculated as a sum of SI and UIBC.
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Affiliation(s)
- Kamil Strzelak
- University of Warsaw, Department of Chemistry, Pasteura 1, 02-093 Warsaw, Poland.
| | - Natalia Rybkowska
- University of Warsaw, Department of Chemistry, Pasteura 1, 02-093 Warsaw, Poland
| | - Agnieszka Wiśniewska
- Medical University of Warsaw, Faculty of Health Sciences, Department of Laboratory Diagnostics, Banacha 1a, 02-097 Warsaw, Poland
| | - Robert Koncki
- University of Warsaw, Department of Chemistry, Pasteura 1, 02-093 Warsaw, Poland
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12
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Huang R, Andersen LMK, Rofstad EK. Metastatic pathway and the microvascular and physicochemical microenvironments of human melanoma xenografts. J Transl Med 2017; 15:203. [PMID: 29017512 PMCID: PMC5634823 DOI: 10.1186/s12967-017-1307-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 09/26/2017] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND Malignant melanoma of the skin can metastasize through blood vessels and lymphatics. The primary tumor develops a vascular microenvironment characterized by abnormal blood vessels and lymphatics and a physicochemical microenvironment characterized by low oxygen tension, regions with hypoxic tissue, and high interstitial fluid pressure (IFP). This study aimed at identifying relationships between the metastatic route of melanomas and characteristic features of the microvascular and physicochemical microenvironments of the primary tumor. METHODS Two patient-derived xenograft (PDX) models (E-13, N-15) and four cell line-derived xenografts (CDX) models (C-10, D-12, R-18, T-22) of human melanoma were included in the study. Tumors were transplanted to an orthotopic site in BALB/c-nu/nu mice, and when the tumors had grown to a volume of 500-600 mm3, the IFP of the primary tumor was measured and the hypoxia marker pimonidazole was administered before the host mouse was euthanized. The primary tumor, lungs, and six pairs of lymph nodes were evaluated by examining hematoxylin/eosin-stained and immunostained histological preparations. The expression of angiogenesis-related genes was assessed by quantitative PCR. RESULTS C-10, D-12, and E-13 tumors disseminated primarily by the hematogenous route and developed pulmonary metastases. These tumors showed high angiogenic activity and high expression of the F3 gene as well as ANGPT2 and TIE1, genes encoding proteins of the angiopoietin-tie system. N-15, R-18, and T-22 tumors disseminated mainly by the lymphogenous route and developed metastases in draining lymph nodes. These tumors had highly elevated IFP and showed high expression of NRP2, a gene encoding neuropilin-2. CONCLUSION The primary metastatic route of orthotopic human melanoma xenografts and the development of lung and lymph node metastases are influenced significantly by the microvascular and physicochemical microenvironments of the primary tumor.
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Affiliation(s)
- Ruixia Huang
- Group of Radiation Biology and Tumor Physiology, Department of Radiation Biology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
| | - Lise Mari K. Andersen
- Group of Radiation Biology and Tumor Physiology, Department of Radiation Biology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
| | - Einar K. Rofstad
- Group of Radiation Biology and Tumor Physiology, Department of Radiation Biology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
- Department of Radiation Biology, Institute for Cancer Research, Norwegian Radium Hospital, Box 4953, Nydalen, 0424 Oslo, Norway
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Avram S, Coricovac DE, Pavel IZ, Pinzaru I, Ghiulai R, Baderca F, Soica C, Muntean D, Branisteanu DE, Spandidos DA, Tsatsakis AM, Dehelean CA. Standardization of A375 human melanoma models on chicken embryo chorioallantoic membrane and Balb/c nude mice. Oncol Rep 2017; 38:89-99. [PMID: 28535001 PMCID: PMC5492638 DOI: 10.3892/or.2017.5658] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 05/08/2017] [Indexed: 01/07/2023] Open
Abstract
Cutaneous melanoma is a metastatic disease characterized by high resistance to treatment, the incidence of which has alarmingly increased worldwide over the past years. A thorough characterization of tumor onset, progression and metastasis is compulsory to overcome the gaps existent in melanoma biology. The present study suggests a well-established protocol and a detailed histological description of human melanoma models in ovo and in vivo obtained by the inoculation of A375 cells to chick embryo chorioallantoic membrane (CAM) and Balb/c nude mice. The inoculation of A375 cells on CAM led to the formation of compact primary and secondary tumors on day 4 post-inoculation, with mean surface area values of 2.2±0.4 mm2 and 1.5±0.3 mm2, respectively. Moreover, the vessels around the tumors presented a spike wheel pattern, indicating a strong angiogenic reaction. All the injected mice, apart from one, developed solid polypoid primary tumors with lobulated surfaces and intense vascularization, and achromic epithelioid malignant melanocytes with vesiculous nuclei and necrosis area were detected. Metastasis was histologically confirmed in only 30% of the mice with the tumor xenografts. These data indicate that the standardization protocols proposed are complex and reproducible, and can be further employed for the therapeutic surveillance of antiangiogenic and anticancer agents.
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Affiliation(s)
- Stefana Avram
- Department of Pharmacognosy, Faculty of Pharmacy, 'Victor Babeș' University of Medicine and Pharmacy Timisoara, Timisoara 30004, Romania
| | - Dorina-Elena Coricovac
- Department of Toxicology, Faculty of Pharmacy, 'Victor Babeș' University of Medicine and Pharmacy Timisoara, Timisoara 30004, Romania
| | - Ioana Zinuca Pavel
- Department of Pharmacognosy, Faculty of Pharmacy, 'Victor Babeș' University of Medicine and Pharmacy Timisoara, Timisoara 30004, Romania
| | - Iulia Pinzaru
- Department of Toxicology, Faculty of Pharmacy, 'Victor Babeș' University of Medicine and Pharmacy Timisoara, Timisoara 30004, Romania
| | - Roxana Ghiulai
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, 'Victor Babeș' University of Medicine and Pharmacy Timisoara, Timisoara 30004, Romania
| | - Flavia Baderca
- Department of Microscopic Morphology, Faculty of Medicine, 'Victor Babeș' University of Medicine and Pharmacy Timisoara, Timisoara 300041, Romania
| | - Codruta Soica
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, 'Victor Babeș' University of Medicine and Pharmacy Timisoara, Timisoara 30004, Romania
| | - Danina Muntean
- Department of Pathophysiology, Faculty of Medicine, 'Victor Babeș' University of Medicine and Pharmacy Timisoara, Timisoara 300041, Romania
| | - Daciana E Branisteanu
- Department of Dermatology and Venereology, 'Grigore T. Popa' University of Medicine and Pharmacy Iasi, Iasi 7000115, Romania
| | - Demetrios A Spandidos
- Laboratory of Clinical Virology, School of Medicine, University of Crete, Heraklion 71003, Greece
| | - Aristides M Tsatsakis
- Department of Forensic Sciences and Toxicology, Faculty of Medicine, University of Crete, Heraklion 71003, Greece
| | - Cristina Adriana Dehelean
- Department of Toxicology, Faculty of Pharmacy, 'Victor Babeș' University of Medicine and Pharmacy Timisoara, Timisoara 30004, Romania
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Ene Nicolae CD, Nicolae I. Interleukin 8 serum concentration, but not lactate dehydrogenase activity, positively correlates to CD34 antigen in melanoma tumors. J Immunoassay Immunochem 2017; 37:463-71. [PMID: 27175552 DOI: 10.1080/15321819.2016.1155996] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
CD34 promotes melanoma cell motility, negative regulation of cellular response to hypoxia and positive regulation of vasculogenesis. Interleukin 8 (IL-8) is responsible for angiogenic response in endothelial cells, increases proliferation, metastasis, and survival of melanoma cells. The aim of our study was evaluation of relationship between CD34 immunoexpression and IL-8 serum concentrations in melanoma patients. The study was conducted on patients with melanoma that were divided in: Clark II (17 patients - 19.3%), Clark III (33 patients - 37.5%), Clark IV (22 patients - 25%), and Clark V (16 patients - 18.2%) levels. CD34 expression was absent for Clark II melanomas, and positive for Clark III (6.1%), Clark IV (40.9%), and Clark V (56.2%). The CD34 immune-mark was highly positive only for Clark IV and V levels. Interleukin 8 (IL-8) had high values (above 15 pg/mL) for all patients with melanoma (58.9% - Clark II; 87.8% - Clark III; 90.9% - Clark IV and 93.7% - Clark V). We have found a strong and statistically significant correlation between CD34 and IL-8 for Clark IV (r = 0.54, P < 0.05) and Clark V (r = 0.72, P < 0.05) melanomas. CD34 and IL-8 are associated with poor prognosis of melanoma, metastasis, and neoangiogenesis.
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Affiliation(s)
- Corina Daniela Ene Nicolae
- a Carol Davila Clinical Hospital of Nephrology , Bucharest , Romania.,b Carol Davila University of Medicine and Pharmacy , Bucharest , Romania
| | - Ilinca Nicolae
- c Victor Babes Hospital of Tropical and Infectious Diseases , Research in Dermatology , Bucharest , Romania
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Pires L, Demidov V, Vitkin IA, Bagnato V, Kurachi C, Wilson BC. Optical clearing of melanoma in vivo: characterization by diffuse reflectance spectroscopy and optical coherence tomography. JOURNAL OF BIOMEDICAL OPTICS 2016; 21:081210. [PMID: 27300502 DOI: 10.1117/1.jbo.21.8.081210] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 05/23/2016] [Indexed: 05/03/2023]
Abstract
Melanoma is the most aggressive type of skin cancer, with significant risk of fatality. Due to its pigmentation, light-based imaging and treatment techniques are limited to near the tumor surface, which is inadequate, for example, to evaluate the microvascular density that is associated with prognosis. White-light diffuse reflectance spectroscopy (DRS) and near-infrared optical coherence tomography (OCT) were used to evaluate the effect of a topically applied optical clearing agent (OCA) in melanoma in vivo and to image the microvascular network. DRS was performed using a contact fiber optic probe in the range from 450 to 650 nm. OCT imaging was performed using a swept-source system at 1310 nm. The OCT image data were processed using speckle variance and depth-encoded algorithms. Diffuse reflectance signals decreased with clearing, dropping by ∼ 90% after 45 min. OCT was able to image the microvasculature in the pigmented melanoma tissue with good spatial resolution up to a depth of ∼ 300 μm without the use of OCA; improved contrast resolution was achieved with optical clearing to a depth of ∼ 750 μm in tumor. These findings are relevant to potential clinical applications in melanoma, such as assessing prognosis and treatment responses. Optical clearing may also facilitate the use of light-based treatments such as photodynamic therapy.
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Affiliation(s)
- Layla Pires
- University of São Paulo, São Carlos Institute of Physics, Avenue Trabalhador São-Carlense, 400, São Carlos, São Paulo 13566-590, BrazilbUniversity of Toronto, Department of Medical Biophysics, Princess Margaret Cancer Research Tower, 101 College Street, T
| | - Valentin Demidov
- University of Toronto, Department of Medical Biophysics, Princess Margaret Cancer Research Tower, 101 College Street, Toronto, Ontario M5G 1L7, Canada
| | - I Alex Vitkin
- University of Toronto, Department of Medical Biophysics, Princess Margaret Cancer Research Tower, 101 College Street, Toronto, Ontario M5G 1L7, CanadacUniversity Health Network, Princess Margaret Cancer Center, Princess Margaret Cancer Research Tower, 101
| | - Vanderlei Bagnato
- University of São Paulo, São Carlos Institute of Physics, Avenue Trabalhador São-Carlense, 400, São Carlos, São Paulo 13566-590, Brazil
| | - Cristina Kurachi
- University of São Paulo, São Carlos Institute of Physics, Avenue Trabalhador São-Carlense, 400, São Carlos, São Paulo 13566-590, Brazil
| | - Brian C Wilson
- University of Toronto, Department of Medical Biophysics, Princess Margaret Cancer Research Tower, 101 College Street, Toronto, Ontario M5G 1L7, CanadacUniversity Health Network, Princess Margaret Cancer Center, Princess Margaret Cancer Research Tower, 101
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